Having owned a number of M1A's, AK's and AR's, as well as a couple of different "scouts" (not a Ruger though), Id go with the Scout and an AK(5.45) or AR.
Ive also had a couple of "do all" type guns, and none of them "did all" very well.
If you go wlth an M1A, look for an older one. Like most things "Springfield", the older the better.
"If the rule you followed brought you to this,
of what use was the rule?"
“The enemy is anybody who's going to get you killed, no matter which side he is on.” - Joseph Heller